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Finding the Fourth Proportional to 664,277.10, 995,103.45 and 397,244.40

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Solution

The fourth proportional to 664,277.10, 995,103.45 and 397,244.40 is: 595,081.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,277.10 : 995,103.45 = 397,244.40 : x
  2. Step 2: Convert to fraction form
    664,277.10/995,103.45 = 397,244.40/x
  3. Step 3: Cross multiply
    664,277.10x = 995,103.45 × 397,244.40
  4. Step 4: Simplify right side
    664,277.10x = 395,299,272,933.18
  5. Step 5: Solve for x
    x = 395,299,272,933.18/664,277.10
  6. Step 6: Final answer
    x = 595,081.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.